Electrical stop motion for knitting machines



E. s. HIIIIELINE. ELECTRICAL STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED JAN. II, I922- 1,417,914.

Patented May 30, 1922. I

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E. S. HINELINE.

ELECTRICAL STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED JAN. II, I922.

1 4 1 7,914 Patented May 30, 1922.

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ELECTRICAL STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED JAN. 11. 1922' Y Patented May 30, 1922.

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ELECTRICAL STOP MOTION FOR KNITTING IVIA'CHINES.

APPLICATION FILED JAN. 11, I922.

1,41%91 I Patented May 3%, 1922.

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E. S. HINELINE.

ELECTRICAL STOP MOTION FOR KNITTING MACHINES.

APPLTCATTON FILED 1A-N.1I, 1922.

Patented May 30, 1922.

TSHEETSSHEET 6- E. S. HINELINE.

ELECTRICAL STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED J'AN.1I, I922.

Patented May 30, 1922.

- Inven$orw EdsonLSiHinc-Zne,

UNITED STATES PATENT OFFICE.

EDSON S. HINELINE, OF PROVIDENCE, RHO-DE ISLAND, ASSIGNOR TO- HINELINE ENGI- NEERIN G COMPANY, OF PAWTUCKET, RHODE ISLAND, A CORPORATION OF RHODE ISLAND.

ELECTRICAL STOP MOTION FOR KNITTING MACHINES.

Specification of Letters Patent.

, Patented May 30, 1922.

Application filed January 11, 1922. Serial No. 528,358.

for Knitting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts. Y

.This application is a continuation as to common subject matter, of my copending application Serial No. 365,939, filed March 15, 1920.

This invention relates to stop motion for textile machines and preferably to electrical stop motions for knitting machines.

In order that the principles of the invention may be readily understood I have disclosed a single embodiment thereof in the accompanying drawings, wherein Fig. 1 is a front elevation of a portion of a knitting machine and the yarn support therefor and representing a portion of my invention applied thereto;

Fig. 2 is a right hand elevationof parts of a knitting machine and representing my invention as applied thereto;

Fig. 3 is a detail representing in front elevation a portion of the shipper mechanism of the machine and the rock shaft constituting a portion of my invention;

Fig. 4 is a side elevation of a box or re ceptacle wherein parts of the stop motion are mounted and showing also a brake;

Fig. 5 is a side elevationof the structure shown in Fig. 4:, the cover of the box or receptacle being omitted;

Fig. 6 is a vertical section upon the line 6-6 of Fig. 5;

Fig. 7 is a detail in vertical section upon the line 7--7 of Fig. 5;

Fig. 8 is a transverse section upon the line 88 of Fig. 1;

Fig. 9 is a detail in side elevation of the mechanism shown in Fig. 8;

Fig. 10 is a vertical section upon the line 10-10 of Fig. 8;

Fig. 11 is a horizontal section upon the line 1111 of Fig. 9;

Fig. 12 is a view mainlv in side elevation but partially in vertical section of a portion of my invention and representing in full lines and in dotted lines two positions of one of the yarn sweeps;

Fig. 13 is a detail in planof the head or block and of the sweep arms mounted there- 0 Fig. 14 is a detail in side elevation representing the head or block and one of the positions of a sweep arm carried thereby;

Fig. 15 is a view similar to Fig. 12 but representing two other positions of the sweep arm;

Fig. 16 is a detail in side elevation of the upper portion of the mechanism shown in Fig. 15 but upon a larger scale; and

Fig. 17 is a diagram representing a preferred arrangement of the electric circuit employed in the practice of my invention.

It has long been proposed to employ electrical stop motions in connection with knitting machines, but so far as I am aware an electrical 'stop motion for knitting machines has never been produced that is satisfactory called Banner machine of the type disclosed in the patent to Joshua D. Hemphill No. 933,443, September 7, 1909, but obviously my invention is not restricted in its application thereto. My stop motion is also applicable to many other types of textile machine although I have herein shown it only in connection with knitting machines.

I shall in the ensuing description set forth the preferred embodiment of my invention and specifically describe the same without limiting my invention except as expressly set forth in the claims.

It is unnecessary to refer in any detail to the knitting machine herein represented otherwise than to state that it is provided with a driving shaft 8 whereon are positioned the loose pulley 10 the slow speed pulley p and the quick speed pulley p.

When the machine is running the belt is held upon the pulley p or the pulley p by means of a belt guide 1, shown most clearly in Fig.

2, and. which extends from an arm 2 shown in Fig. 3, as laterally extending from a 5111pper frame or member 3 mounted for slidingmovement upon, a suitable pin or stud 4 ex-' a machine-running and a machine-stopped position, and in the disclosed embodiment of my invention, for this purpose said rock shaft 5 is provided with an upwardly extending arm 6, shownmost clearly in Fig. 3

as adapted to take against one side of the shipper frame 3. Connected to said arm 6 is a coiled spring 7, the opposite end whereof is attached tothe framing of the machine in such a way that the spring tends constantly to rock the shaft 5 from the machinerunning to the machine-stopped position, and at the same time to move the shipper with the belt guide from the position indicated in Fig. 3, where the belt is upon the pulley 1), into a position that places the belt upon the loose pulley 19 The rock shaft 5 is provided with an arm.

8 havin a handle 9 to effect the resetting of the sha t after the break or defect in the thread has been remedied.

It is very desirable that all danger of fire from arcing or sparking shall be prevented.

Accordingly all the contacts are preferably placed in closed receptacles so that all danger of such character is avoided.

As most clearly shown in Figs. 2 and 5, I

apply to some suitable-part of the machine frame a box or receptacle indicated at 10, it having a cover indicated at 11 in Fig. 2, said cover being removed in Fig. 5 to show the interior construction.

The rock shaft5 is mounted in the box 10, it being received in suitable bearings 12, 13

therein. Said rock shaft extends for a. substantial distance outside the said box or receptacle 10 and intothe defined cooperatlipg e. sirably, and as indicated at 13 in Fig. 2, I provide a bearing carried directly by the machine framing for receiving and supporting the protrudingend of the rock shaft 5. The structure is such that the box or receptacle 10 may be readily secured to the framing-of the machine, which may be of many different types, as by means of bolts o-r screws received in holes 13 in the corners of said box or receptacle, as most clearly indicated in Fig. 5. The bearing 13 may also bereadily secured tothe machine framing. By reason of the described structure this part of my stop motion may be attached with a. minimum of expense and without difficulty to the machine framing.

Preferably the spring 7 previously retwo contact blades or part-s 19, 19 which are adapted, when the shaft is in the position shown in Fig. 5, to make contact with like parts or terminals 20, 20' extending from a lead wire 21.

The shaft 5 is provided with a suitable formation by means of which it is held in machine-running position so long as the cir-. cuit is not completed through. the magnet or like means indicated at 22 in Fig. 5. For

this purpose I have represented a disk or cam 23 suitably secured to or formed with said shaft 5. Said disk or cam is provided with a radial notch 26, shown most clearly in Fig. 6, and suitably pivoted at 27 upon the magnet 22, herein shown as laminated, is an armature 28 which, when the magnet is de-energized. engages the radial projection- 26 of the disk or cam 23. Herein for the purpose the armature is provided with an upwardly extending projection 29, clearlv indicated in Fig. 6.

Obviously so long as the magnet 22 remains de-energized, the projection 29 of the armature 28 engages wit-h the projection 26 of the disk or cam 23, thereby preventing said disk and rock shaft 5 from turning in a clockwise direction, viewing Fig. 6, as indicated by the arrow upon said disk. When, however, the magnet 22 is energized and herein by either'a broken thread or a thread having faulty or impaired tension, the'armature is attracted, withdrawing the projection 29fro-m the rojection 26 and permitting the rocking of the shaft 5 in a clockwise direction viewing Figs. 2 and 5, and thus shifting the belt to the loose pulley 12 It will be observed that the parts thus far de scribed are of very compact construction, and can readily be app-lied to most knitting machine frames, as in a position in proxim- Y I will now describe the preferred form of means which may be readily adapted to many types of machines for supporting, and preferably at a higher elevation than the knitting head, the means operative upon break or defective tension of the thread or of any number of the threads, for causing,

energization of the magnet 22 and consequently the stopping of the machine.

The machine is shown as provided with the usual vertical creel rod 30 represented in Figs. 1 and 2 and as having upwardly ex tending from the frame a fixed rod 31 which at its upper end carries or sup-ports a box or receptacle 32 herein shown as having a re movable top or cover 33. As indicated in Fig. 15, the cover is provided with a series of screws or pins 34 extending into suitable sockets in the receptacle or box 32.

The knitting machine may be equipped with means for feeding one or more and preferably a plurality of threads. Herein l have represented means for receiving four distinct threads. the breakage or impaired tension of any one of which will result in the topping of the knitting machine.

In accordance with the disclosed embodiment of my invention, the box or receptacle 32, which may desirably be formed of aluminum, is provided with four hubs 36. 36, 36, 36, which may be if desired integral with said box or receptacle 32 or may be suitably attached thereto. Vithin each of said hubs is fast a bushing 37, 37 37, 37. and mounted in the said bushings are four shafts having upwardly extending arms 38. Each of said, arms 38. is herein shown as provided with a series of spaced fingers 32'). which, in the unbroken condition of the thread pertaining thereto, occupies the posi tion indicated in Figs. 9 and 10 with respect to its co-acting fixed frame 40 upwardly extending from' the respective hub 36. 36", 36, 36 to which each is secured by screws 40 as indicated in Figs. 10 and 11. One of the said shafts is indicated at 41 at the right in Fig. 10. I Upwardly extending from the cap or cover 33 of the box or receptacle 32 is a rod 42 shown most clearly in Figs. 9, 12 and 15 and having a head or block 42 at the up-- per end herein represented as rectangular in form with lateral surfaces and has having suitably secured and preferably pivoted at the four sides thereof four sweep arms herein represented as levers 43, 43 43*, 43, the pivots being clearly indicated' at 44, and the outer end of each of said sweep arms being open or forked as indicated at 45 to receive the yarn passing therethrough from the bobbins or yarn packages upon the creel frame. the yarns passing first between the members 38, 40 ofthe respective set of stop devices already described. The open end of each sweep arm permits the unduly tensioned yarn or thread to slip therefrom as hereinafter more fully described.

Pivotally secured to each of the yarn levers 43 etc., as indicated at 46. is the upper end of a vertical rod 47 having thereon an :uljustable collar 48. Each of said rods 47 extends through a suitable opening in the cap 33 as indicated in dotted lines at 49 in Fig. .12 and between which adjustable collar and the cap 33 is a slight coiled spring 50. the compression whereof may be varied by adjusting the collar 48 as by means of a suitable screw 51. observed that the tension for the several yarns or threads may differ among themselves, this being accomplished by setting the collars 48 at respectively different heights, or, if desired, the yarns may all be fed under the same tension.

As indicated most clearly in Figs. 10 and 11, the receptacle 32 is provided with four cups 52, 52, 52 52". said cups being preferably formed with a lining 53 of bakelite or some other insulating material.

Viewing Figs. 10 and 11, it will be observed that the lower end of each of the rods 47 directly carries a yoke constituting a pair of terminals 54, 55 of any suitable material. such, for example, as silver wire. Within each of the cups 52, 52 52 52 I preferably place mercury as indicated at 56, there being suitable electrical connec' tions from each of the cups as indicated in Fig. 10. The rods 47 are so positioned above and with respect to the box or receptacle 32 that each of the yokes and the rods 47 straddles two of the cups, as also indicated in the diagram Fig. 17, so that a circuit may be completed upon the depres' sion of any one of the rods 47 sufficiently to cause contacts 54, 55 to touch or dip into the mercury in a pair of the cups. Extending from the mercury in the said cups are suitable wires indicated at 57 and extending to one of the lead lines, as indicated at 58 in Fig. 17. The described construction constitutes one type of mercury switch.

A yarn under suitable tension received in the end 45 of one of the levers 43, 43 43, 43 permits such lever to assume the position indicated in Figs. 1 and 2 and at A in Fig. 15 against the compression of the respective spring 50. hen, however, the yarn becomes unduly tensioned because of: some defect at the knitting head or for any other cause, the arm 43, 43 43 43 pertainingto that yarn is drawn downwardly against the compression of its spring 50 and substantially into the position indicated at B in Fig. 12 at which time the contacts 54. 55 touch or dip into the mercury in a pair of cups 52, 52 52", 52, the yarn at substantially the same time slipping out of the open free end of the arm that has moved down, when it assumes the position indi- It will lie cated in dotted lines in Fig. 12, thus providing sufiicient slack to prevent breaking of the thread before the parts of the knit ting head come actually to rest and preventlateral faces with an open ended groove 58 in which the upper end of the corresponding rod 47 moves, each rod 47 being outwardly bent at its upper end, the bent end as indicated at 46 being received in a corresponding opening in the base portion 58 of the corresponding sweep arm 43. The width of each groove 58 is such and the position of the pivot 44 of the sweep arm 43 is such that, desirably, when the sweep arm is in its extreme uppermost position as indicated atA in Fig. 15, the side of the rod 47 takes against the left hand side viewing Fig. 15 of the groove 58*, thus providing as it were a stop for the sweep arm in its extreme upper position which is the normal position of. the sweep arm when the machine is in operation. When the yarn is unduly tensioned thesweep arm 43 is pulled down into the second position indicated at B in .Fig. 12 and which is desirably slightly below the horizontal, and when the sweep arm assumes said position the yoke or contact 54,- touches the mercury 56 thereby making a contact and causing the stoppage of the machine. Instantly upon the very commencement of the downward movement of the sweeparrn 43 from the position A the rod 47 is moved laterally at its upper end about the pivot 44 of the sweep arm so as laterally to move said rod from contact with the walls of the groove 58*. Owing to the described construction, there is no physical contact of mechanically acting parts in the downward movement of the sweep arm 43 when the same assumes the position B which is the machine stopping position. or when it assumes the lowermost functioning position C, at which time the yarn slips from the open end 45 of the sweep arm, it being observed that the depth of the mercury cups and the length of the contacts are such that the contacts do not bring up against-the bottom of the cup even when the sweep arm has been brought into the position C, such contact with the bottom of the mercury cups never occurring in normal operation.

The two positions B C of the'sweep arm 43 are occupied substantially simultaneously that is wlthout perceptible'time intervalunder the drag of the yarn, so that as stated, the yarn slips out ofv the open free end 45 of the sweep arm at the same time that the contact is made at the 'mercurythat is subout any strain or pull upon the yarn subsestantially simultaneously therewith and without physical contact of mechanical parts which, if the same occurred, would result in a tightening of the yarn at the needles with consequent cutting thereof by the needles or by the sinkers and probably the formation of a hole in the fabric.

I have indicated at D in Fig. 15 a fourth position of the sweep arm 43. This is not a functioning position but is merely one into which the sweep arm may be moved manually and when the sweep arm occupies such position the side of the rod 47 again contacts with the left hand side viewing Figs. 14 and 15 of the open ended groove 58*, and at such time the lower end of the yoke 54, 55 might touch the bottom of the mercury cups.

The operation as herein described is an exceedingly delicate one and is made withquent to or additional to that which causes the said downward movement of the sweep arm 43 from the position A into the positions B 0. Therefore I provide with the closing of the circuit for machine stoppage, sil'nultaneously a. supply. of slack yarn without fabric impairment. The machine is stopped without bringing further tension upon the-yarn than that which caused the movement of the sweep arm. In all prior constructions and even where provision is made for slack yarn where undue tension occurs, the actuation of the shipper mech- "anism by reason of physical contact of mechanically actlng parts causes 1n actual practice a tightening of the yarn at the needles before advantage can be taken of the provision of the slack yarn.

I have already stated that within the bushings 37, 37 37", 37 are positioned shafts 41 having upwardly extendin arms 38, one of said shafts being indicate at 41 in Fig. 10. Fast upon each of said shafts 41 is an arm or lever 60 suitably insulated, and carried upon said arms are a pair of contacts 61, 62 of silver wire or other suitable material adapted to dip into the mer-' c-ury in the respective cups 52, 52*, 52, 52, the said arms 60 being arranged suitably about but inside of the box or receptacle 32, so that the contacts 61, 62 for each arm dip into the proper mercury cups. It will be evident that when a yarn passing between the parts 38, 40 pertaining thereto breaks, the arm 60 pertaining to that yarn rocks downwardly, viewing Fig. .10, so that the contacts 61, 62 dip into the appropriate mercury cups and the, circuit is completed throughthe wire 57 and through the wire 63 indicated at the diagram Fig. 17.-

Thus the circuit is completed through the mercury cups upon breakage of any yarn or in the event ofundue tension imposed thereon.

In Fig. 17, I have diagrammatically indi- 130 ley.

cated a type of circuit but to which I am in no wise limited. Therein one of the lead lines or wires is indicated at 58. The other of said lead lines or wires is indicated at 64, it extending to the magnet 22 and from thence through the conductor 65 to a lamp or other suitable resistance 66, there being a wire 67 extending from the conductor 65 to the terminal20 indicated in Fig. From said lamp 66 extends a conductor 68 which branches, as indicated at 69, one part being in communication with the conductor 63 and the other with a conductor 70 which extends as indicated to the terminal 20. In said diagram the shaft 5 is indicated as carrying the contacts 19, 19 and in said diagram it will be observed that a subsidiary circuit is broken at the terminals 19, 20, 19, 20 in the event that the circuit is completed at the box or receptacle 32 by reason of the breaking or undue tension of any one of the yarns. In Figs. 4 and 5 I have represented a brake device 71 mounted upon the box or receptacle 10 and adapted to be brought into engagementwith a pul- Such brake device is not herein claimed, being claimed in my co-pending application Serial No. 497,219.

If desired, and in connection with each of the yarns I may provide a knot catcher of any suitable construction, herein for the purpose I have represented in Figs. 10 and 11 upon each of the hubs 36,36, 36", 36 a downwardly extending arm 72 having ahorizontally extending arm 73 in which is pivoted at 74 a disk 75 having four slots 76 of graduated sizes, thereby permitting the passage of any desired size of yarn or thread without obstruction. In the event of a knot, however, the yarn is held from free passage and is therefore tensioned sufficiently to swing the sweep arm 43 into machinestopping position. The disk 75 is held in fixed position by a screw 77, the loosening of which permits the desired adjustment of the disk. Preferably the extreme end of the bent portion 73 of the arm 72 is provided with a hook or guard 78 to prevent the escape of the yarn from the functioning slot 76, said slot being desirably open ended.

In the event that the circuit is completed at the box or receptacle 32, the current passes through the lamp 66, thereby causing the filament thereof to glow and to indicate to the operative that there is a yarn defect at the machine. Moreover, said lamp acts when the filament thereof glows as a suitable resistance to absorb the are.

It will be observed, viewing Fig. 17, that immediately upon the completion of the circuit at the box or receptacle 32, the magnet 22 is energized so as to attract the armature thereof and to break that part of the circuit including the conductors 67,70. Nevertheless the magnet 22 remains energized which I may employbecause the circuit remains unimpaired fect is remedied, since it is only by repairing such yarn defect that the rock shaft 5 can be positioned in machine starting position.

Furthermore although the circuit is completed at the box or receptacle 32, the immediate breaking thereof at the conductors 67, 70 prevents all danger of arcing at the box or receptacle 32.

It will be evident from the foregoing description that I have provided a very compact and yet complete electrical stop motion which may readily applied to existing machines, since it is necessary only to provide the bracket 31 to be secured to the creel rod 30, all the parts of the stop motion being mounted upon the said bracket 31 with the exception of the box 11 and the rock shaft 5 and closely related parts which are secured upon the frame of the machine and desirably in close proximity to the fast and loose pulleys thereof.

V'Vhile I have specifically described the application of my invention to a knitting machine, it is to be understood that it may be used with other textile machines wherein yarn orthread or like strands are fed to some functioning part of the mechanism."

Having thus described one illustrative embodiment of my inventioin'l desire it to be understood that although specific terms are employed they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

1. An electrical stop motion for knitting machines having shipper mechanism, an electromagnetic circuit cooperating therewith and an armature, a support having a plurality of mercury cups, vertically movable a pivoted lever at the upper end of and connected to each rod and having an open end out of which the yarn may slip upon the occurrence of undue tension, the construction and arrangement v of the said parts being such that the contact is made in the mercury cup substantially simultaneously with the slipping of the unduly tensioned yarn out of the open end of the lever pertaining thereto.

2. An electrical stop motion for textile mechanism having in combination, shipper mechanism, an electromagnetic circuit and an armature, a contact, a rod having an up and down movement and having at its lower end portion a contact to engage the first mentioned contact, and a lever at the upper end 'portion of and connected to said rod, and

having an open end out of which the yarn may slip upon the occurrence of undue tension, the construction and arrangement of the said parts being such that electrical contact ismade prior to yarn slippage and without putting appreciable strain upon the yarn.

3. An electrical stop motion for textile mechanism having in combination, shipper mechanism, an electromagnetic circuit cooperating therewlth and an armature, a

. mercury cup, a substantially vertically movable rod having at its lower end portion a contact adapted to dip into said mercury cup, and a lever-pivoted at the upper end portion of and connected to said rod and having an open end out of which the yarn may slip upon the occurrence of undue tension, the construction and arrangement of the said parts being such that the contact is made in the mercury cup substantially simultaneously with the slipping of the unduly tensioned yarn .out of the open end of the lever pertaining thereto.

4. An electrical stop motion for knitting machines having a receptacle supported from I the machine framing, a fixed upright rod extending-upwardly from the receptacle, a plurality of vertically movable rods corresponding in number to the number of yarns, a lever with a forked open end directly connected to each rod, a contact at the lower end of each rod, a mercury cup into which such contact is adapted to dip, and operative connections between the contacts and the shipper mechanism, the construction and relation of parts being such that the unduly tensioned yarn slips from the forked open end of the lever pertaining thereto substantially simultaneously with the contact in the mercury cup, whereby additional tightening of the yarn at the needles is prevented.

5. An electrical stop motion for knitting machines comprising a receptacle having a mercury cup, a plurality of upright rods movable downwardly to effect contact in the mercury cup and having a contact member for such purpose, a corresponding plurality of levers pivoted upon the framing and pivoted intermediatetheir ends respectively to with the contact completion in the mercury cup, whereby additional tightening of the yarn at [the needles is prevented.

6; An electrical stop motion for textile machines having a receptacle supported from the machine framing, a fixed upright rod extending upwardly from the receptacle, a

substantially vertically movable rod, a lever with a forked open end directly connected to said movable rod, a contact at the lower end portion of said rod, a mercury cup into which the contact is adapted to dip, and operative connections between the contacts and the shipper mechanism, the construction and relation of parts being such that the unduly tensioned yarn slips from the forked open end of the lever substantially simultaneously with the contact in the mercury cup, whereby additional tightening of the yarn at the needles is prevented.

7. An electrical stop motion for textile machines having shipper mechanism, an electric circuit cooperating therewith and including an armature, a mercury cup, a rod movable up and down and having at its lower end portion a contact adapted to dip into said mercury cup and a movable arm at the upper end of and connected to said rod and having an open end out of which the yarn may slip upon the occurrence of undue tension, the construction, arrangement and timing of the said parts being such that contact is made in the mercury cup and the unduly tensioned yarn slips out of the open end of the movable arm without additional tensioning of the yarn.

8. An electrical stop motion for textile machines having shipper mechanism, an electric circuit cooperating therewith and including an armature, a mercury cup, a rod movable up and down and having at its lower end portion a contact adapted to dip into said mercury cup and a movable arm at the' upper end of and connected to said rod and having an open end out of which the yarn may slip upon the occurrence of undue tension, the construction, arrangement and timing of the said parts being such that contact is made in the mercury cup and substantially simultaneously therewith the unduly tensioned yarn slips out of the open dip into said mercury cup, and a sweep arm at the upper end portion of and connected to said rod and having an open end out of which the yarnmay slip upon the occurrence of undue tension, said sweep arm having three operative positions, namely, the uppermost position which it occupies when the yarn is-fed at normal tension, the next lower position which it occupies when contact is made at the mercury cup, and the lowermost operative position'which it occupies when the yarn slips out of the open end of the sweep arm.

10. An electrical stop motion'for textile machines having shipper mechanism, an electric circuit cooperating therewith and including an armature, a mercury or like cup, a rod movable up and down and having at its lower end portion a contact adapted to dip into said mercury cup, and a sweep arm at the upper end portion of and connected to said rod and having an open end out of which the yarn may slip upon the occurrence of undue tension, said sweep arm having three operative positions, namely, the uppermost position, which it occupies when the yarn is fed at normal tension, the next lower position which it occupies when con tact is made at the mercury cup, and the lowermost operative position which it 0ccupies when the yarn slips out of the open end of said sweep arm, the timing being such that the said second and third positions are occupied substantially simultaneously.

11. An electricalstop motion for textile machines having shipper mechanism, an electric circuit cooperating therewith. and in cluding an armature, a mercury or like cup, a rod movable up. and down and having at its lower end portion a Contact adapted to dip into said mercury cup, and a sweep arm at the upper end portion of and connected to said rod and having an open end out of which the yarn may slip upon the occurrence of undue'tension, said sweep arm having three operative positions, namely, the uppermost position, which it occupies when the yarn is "fed at normal tension, the next lower position which it occupies when con tact is made at the mercury cup, and the lowermost operative position which it 00- cupies when the yarn slips out of the open end of said sweep arm, the construction and arrangement of parts being such that the said third position of said sweep arm is assumed without movement thereof to its ex- .at the upper end of and connected to said rod and having an open end out of which the yarn may slip uponthe occurrence of undue tension, said sweep arm having three operative positions, namely, the uppermost position which it occupies when the yarn is fed at normal tension, the next lower position which it occupies when contact is made at the mercury cup, and the lowermost operative position which it occupies when the yarn slips out of the open end of the sweep arm, and a stop against which the sweep arm is movable it moved below' the said lowermost operative position. i

13. An electrical stop motion for textile machines having a shipper mechanism, an electric circuit. cooperating therewith and including an armature, a mercury or like cup, a rod movable up and down and having at its lower end portion a contact adapted to dip into said mercury cup, a spring tending to move such rod upwardly, and a sweep.

arm at the upper end portion of and connected to said rod and having an open end out of which the yarn may slip uponthe occurrence of undue tension, the construction and arrangement of the said parts being such that the contact is made in the mercury cup substantially simultaneously with the slipping of the unduly tensioned yarn out of the end of the sweep arm.

14. An electrical stop motion for textile machines having shipper mechanism, an electric circuit cooperating therewith and including an armature, a mercury or like cup, a plurality of rods movable up and down and each having at its lower end portion a contact adapted to dip into said mercury cup, spring means tending normally to move said rods upward, and a sweep arm at the upper end portion of and connected to each of said rods, each sweep arm having an open end out of which the yarn pertaining thereto may slip upon the occurrenceof undue tension, the construction and arrangement of the said parts being such that contact is made in the mercury cup-substantially simultaneouslv with the slipping of the unduly tensioned yarn out of the open end of the sweep arm pertaining thereto.

15. An electrical stop motion for textile machines having shipper mechanism, an electric circuit cooperatingtherewith and including an armature, a mercury or like cup, a rod movable up and down and having at its lower end portion a contact adapted to dip into said mercury cup, said rod having operatively associated with and movable with its upper end portion an open yarn support out of which the unduly tensioned yarn may slip, the construction and arrangement of said parts being such that the contact is made in the mercury cup substantially simultaneously with the slipping of the unduly tensioned yarn out of said open yarn support.

16. An electrical stop motion for knitting machines comprising a rod extending upwardly from the machine framing and supporting the following members of the stop motion, namely? a receptacle, a rod upwardly extending from said receptacle. a

head carried by said rod at a substantial height above said receptacle, a plurality of .levers pivoted upon the lateral surfaces of said head, a corresponding number of vertical rods secured to said levers and extending into said receptacle and there having electrical contacts directly carried thereby,

trical contact, a series of .nected to said levers and extendin wardly into said receptacle and t ere di-- said receptacle and there each having electrical contact directly carried =thereby,

' tending remote from said receptacle, a series of levers each secured to a lateral face of said head and each adapted to swing in a plane parallel with the face of the block to which it is attached, a series of vertical rodfi conownrectly carrying electrical contacts for engagement with said conductors, and springs surrounding said vertically movable rods and adapted normally to maintain said rods and the attached levers elevated.

18. An electrical stop motion for knitting machines having an upright rod, a receptacle supported by said rod, a plurality of hubs extending from said receptacle, a shaft within each hub, a lever within the receptacle upon each shaft and having an elecarms carried b said shafts outside said receptacle, and eac 1 adapted to be supported by an unbroken thread, a corresponding plurality of rods movable up and down and extending into an and a movable sweep arm connected to the upper end of each rod and having an open end out of which the unduly tensioned yarn may slip, and an electrical circuit'adapted to include either of said contacts and to stop the machine in the event of thread breaka e or undue yarn tension.

19. n electrical stop motion for textile machines comprising a receptacle, a rod upwardly extending from said receptacle, a head carried by said rod at a substantial he ght above said receptacle, a plurality of yarn controlled levers pivoted upon the sides of said head, a corresponding number of upright rods secured to said levers and extending into said receptacle and there havmg electrical'contacts directly carried thereby, and means within said receptacle for completing an electric circuit upon down- Ward movement of any one of said series of vertical rods.

20. An electrical stopmotionfor knitting machines comprising a rod upwardly exfrom the machine framing and the following ing electrical conductors, a fixed rod exarts of'the stop mechanism car ried by said rod, namely: a receptacle hav-' headcarried by said fixed rod at a point substantially remote from said receptacle, a series of levers each secured to a lateral surface of said headland each adapted to swing in a plane substantially parallel with the part of the block to which it is attached,

and a series offvertical rods connected to said levers and extending downwardly into said receptacle and there provided with electrical contacts directly carried thereby, and adapted to 'close the circuit of said conductors.

21. An electrical stop motion for knitting machines having an upright rod, a receptacle carried by saidrod, hubs extending from said receptacle, a corresponding number of rock shafts mounted in said hubs and extending into said receptacle, the receptacle having a series of pockets adapted to contain mercury, a series of levers carried at the inner-ends of said shafts and having contacts, arms exterior to said receptacle,

carried by said shafts and adapted to be supported by unbroken yarns, a fixed rod extending upwardly from said receptacle, a head at the upper end of said fixed: rod, a

"series of levers having forked open ends pivoted on said head and movable rods-attached to said levers and extending downward into said receptacle where they are provided with electrical contacts directly carried thereby, and adapted to close the circuit of said conductors. I

22. An electrical stop motlon for textile machines comprising a shipping mechanism,

a rock shaft mounted in cooperating rela-. tion thereto and having means tendmg to move said shipper mechanism and said rock shaft into machine-stopped position, an electric circuit including a magnet having an armature adapted to be attracted upon the completing of thecircuit, said rock shaft having a projection adapted to be engaged by the armature when the magnet is de-energized and thereby to hold the rock shaft 1n machine running position, a receptacle receiving said magnet and into which the rock shaft extends, said rock shaft within said receptacle having a contact included in said circuit.

23. An electrical stop motionfor textile machlnes comprising a shipper mechanism,

a rock shaft mounted in cooperating relation-thereto and having means tending to move sald shippermechanism and said rock shaft intomachine-stopped positon, an elec-' tric circuit including a magnet having an armature adapted to be attracted upon the completing of the circuit, said rock shaft havinga projectlonada'pted to be engaged by the armature when the magnet is deentending into said receptacle and also-extende'rgized and thereby to hold the rock shaft ing outside thereof for cooperation with said shipper mechanism.

24.. An electrical stop motion for textile machines comprising a shipper mechanism, a receptacle containing a magnetand armature and adapted to be secured to the machine framing, a rock shaft having bearing support in said receptacle and extending outside thereof,said rock shaft being in ture and adapted to be secured to the ma chine framing, a rock shaft having bearing support in said receptacle and protruding laterally from the box, said rock shaft inside the box having a disk-like projection adapted directly to engage the armature, whereby said rock shaft is held from rocking movement while the magnet is non-energized, means carried by said rock shaft outside the box and adapted to actuate said shipper mechanism, and an electric circuit associated with said magnet.

26. An electrical stop motion for textile machines comprising a shipper mechanism, a receptacle containing a magnet and armature and adapted to be secured to the machine framing, a horizontal rock shaft of substantial length having bearing support in said receptacle and protruding laterally from said receptacle, said rock shaft inside the receptacle having a small projection adapted directly to engage the armature whereby the rock shaft is held from rocking movement while the armature is non-energized, said rock shaft outside said receptacle having means to engage the shipper mechanism, said rock shaft inside the receptacle carrying an electrical contact and part of a circuit to which said magnet and said contact pertain.

27. An electrical stop motion for textile machines comprising a shipper mechanism, a receptacle containing a magnet and armature and adapted to be secured to the machine framing, a rock shaft having bearing support in said receptacle and extending outside thereof, said rock shaft being in close proximity to the armature and having a small projection thereon adapted directly to engage the armature when the latter is nonenergized, and thereby to be held from rock ing movement, and an electric circuit to which said magnet pertains.

28. An electrical stop motion for textile machines comprising a shipper mechanism,

a receptacle containing a magnet and armature and adapted to be secured to the machine framing, a horizontal rock shaft of substantial length having bearing support in said receptacle and protruding laterally from said receptacle, said rock shaft inside the receptacle having a small projection adapted directly to engag the armature whereby the rock shaft is held from rocking movement while the armature is nonenergized, said rock shaft outside said receptacle having means to engage the shipper mechanism, and an electric circuit to which said magnet pertains.

29. An electrical stop motion for textile machines comprising a shipper mechanism, a receptacle, a rock shaft of substantial length positioned partially in said receptacl and extending transversely of the machine and mounted in cooperating relation to the shipper mechanism and directly carrying thereon means tending to move said shipper mechanism into machine-stopped position, an electric circuit including a magnet having an armature adapted to be attracted upon the completion of the circuit, said niagnet and armature being located within said receptacle, said rock shaft having directly mounted thereon a projection adapted to be engaged by the armature when the magnet is deenergized and thereby to hold the rock shaft in machine running position, and means whereby the circuit is completed by breaking of the yarn and also by impaired tension of a arn.

30. An electrical stop motion for textile machines comprising a shipper mechanism, a rock shaft of substantial length extending transversely of the machine and mounted in cooperating relation to the shipper mechanism, said rock shaft having a lateral extension to move the shipper mechanism into machine stopped position, an electric circuit including a magnet having an armature adapted to be attracted upon the completion of the circuit, said rock shaft having thereon a projection to be directly engaged by the armature when the magnet is deenergized,

and thereby to hold the rock shaft in machine-running position, a receptacle enclosing said magnet and armature and out from which said rock shaft extends, and means whereby the circuit is completed by breaking of the yarn and also by impaired tension of the yarn.

31. An electrical stop motion for textile machines comprising a shipper mechanism, a rock shaft mounted in cooperating relation thereto and having means to move said shipper mechanism into machine-stopped position, an electric circuit including a magnet having an armature adapted to be attracted upon the completing of the circuit, a receptacle, said magnet and armature being located in said receptacle, said rock shaft extending into said receptacle and there carrying a projection adapted to be directly engaged by the armature when the magnet is deenergized, a second receptacle supported by themachine, an upright stationary rod extending from said second receptacle, a

head carried by the upper end of said rod, a

sweep arm pivoted upon said head and having an open end out of which an unduly tensioned yarn may slip, a vertically movable rod connected to said sweep arm and at its lower end extending into said second receptacle and there directly carrying a contact, and a coacting conductor in said receptacle and included in said electriccircuit.

32. An electrical stop motion for textile machines comprising a shipper mechanism,

engaged by the armature when the magnet is denergized, a second receptacle supported by the machine, an upright stationary rod extending from said second receptacle, a head carried by the upper end of said rod, a sweep arm pivoted upon said head and having an open end out of which an unduly tensioned yarn may slip, a vertically movable rod connected to said sweep arm and at its lower end'extending into said second-receptacle and there directly carrying a contact, a mercury cup in said second receptacle and in said electric circuit, the construction and arrangement of the parts being such that the contact is made in the mercury cup substantially simultaneously with th slipping of the unduly tensioned yarn out of the open end of the sweep arm.

33. An electrical stop motion for textile machines comprising a shipper mechanism, a rock shaft mounted in cooperating relation thereto and having means to move said shipper mechanism into machine-stopped position, an electric circuit including a magnet having an armature adapted to be attracted upon the completing of the circuit, a receptacle, said magnet and armature being located in said receptacle, said rock shaft extending into said receptacle and there carrying a projection adapted to be directly engaged by the armature when the magnet is deencrgized, a second receptacle supported by the machine and provided with a series of laterally extending hubs, a fixed member carried by each hub, a shaft positioned within each hub and having a movable yarn member between which and t-he fixed member an unbroken yarn extends, an arm fast upon each of said shafts, 'a contact upon each arm, a series of conductors in said receptacle and into which the contacts upon said arms are adapted to be brought, a fixed rod extending upwardly from said second receptacle, ahead secured to the upper end thereof, a plurality of sweep armspivoted upon, said head or block and having open ends out of which an unduly tensioned yarn may slip. and a series of vertically movable rods respectively secured to said sweep arms and extending into said second receptacle and there directly carrying contacts and adapted to close the circuit of said conductors.

34. An electrical stop motion for knitting machines including a support. a sweep arm pivoted thereon and having an open end out of which an unduly tensioned yarn may slip. a vertically movable rod connected to said sweep arm and having a contact at its lower end, a conductor, a main electric circuit including said contact and conductor shipper means. an electro magnet in said circuit, an armature, means controlling actuation of said shipper means and cooperating with said armature and adapted to be reset only when the magnet is deenergized, and means whereby upon undue tension the circuit is completed and the magnet is energized. and a subsidiary circuit which is broken immediately following the energization of the magnet and remains broken until the magnet is reset.

35. An electrical stop motion for knitting machines including a receptacle having a conductor. a movable member extending into said receptacle and there having a contact. means carried by said movable member and adapted to be supported by unimpaired yarn. but to move upon yarn breakage or undue slackness. thereby to complete a circuit through said contact and conductor, a support extending upwardly from said recep tacle, a sweep arm carried by said support and havingan open end out of which the unduly tensioned yarn may slip. a vertically movable rod connectedto said sweep arm and extending into the receptacle and there provided with a contact cooperating with said conductor, an electric circuit which may include either or both of said contacts, shipper means, an electro magnet in said circuit, an armature, means cooperating with said armature and adapted to be reset only when the magnet is deenergized. means whereby upon yarn breakage or defect the circuit is completed and themagnet is energized, and a subsidiary circuit which is broken immediately following the energization of the magnet. and remains broken until the magnet is reset.

36. An electrical stop motion for knitting and like machines comprising a shipper mechanism, a rock shaft of substantial length extending transversely of the machine shat't directly carrying a projection to be directly engaged by the armature when the magnet is deenergized, and thereby to hold the rock shaft in machine running position, means whereby the circuit is completed by breaking of a yarn and also by impaired tension of a yarn, and a subsidiary circuit which is thereupon broken and remains broken until the magnet is reset.

3?. A knitting machine having an upward extension. a box 32 supported thereby and having a plurality of pockets therein adapted to receive mercury, a circuit including said mercury and extending from said box, projections laterally extending from the box. movable arms mounted Within said extensions, parts movable with said arms and extending into the box 32, and thereat provided with contacts adapted to' engage the mercury in the cups, a fixed rod upwardly extending from the box, a plurality of yarn tension members pivoted to said rod and having rods extending therefrom downwardly 1nto said box 32, springs assoclated with said last mentioned rods to hold the arms in proper position under normal yarn tension, and terminals directly carried by said last mentioned rods and adapted to make contact with the mercury in said cups.

38. An electrical stop motion for knitting machines having shipper mechanism, an electric circuit including a mercury switch cooperating therewith and also including an electro magnet, an armature therefor, means to close the circuit on yarn breakage, other means to close the circuit upon impaired yarn tension, connections whereby each of said means attracts the armature upon the occurrence of the consistency pertaining thereto, and means acting in the event of excessive yarn tension and simultaneously with the closing of the circuit because of yarn tension and out of which the unduly tensioned yarn may slip, thereby to supply sufiicient slack yarn to prevent yarn breakage.

In testimony whereof, I have signed my name to this specification.

EDSO N S. HINELINE, 

